Fixes display of time in thumbnails, need to target...

...specific browsers with some additional CSS

	modified:   main/templates/exams/videotest.css
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
closes #1935 staff 500 page
styling fix for 500 pg
WIP doing email stacktrace
make sure that the stacktrace gets logged and sent
upstart script to ensure /mnt perms are right (#1648)
celery workers should scale with cpu's (#1944)
/mnt perms: remove old code for creating /mnt in chef (#1648)
/mnt perms: make sure to create dir (#1648)
Merge branch 'sef-1648-mnt-perms' of https://github.com/Stanford-Online/class2go into sef-1648-mnt-perms
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
Left navbar cache miss optimization fixes #1941
Changed comment, removed list()
3 minute cache
Merge pull request #1946 from Stanford-Online/dca_new_working2

#1945; Interactive quiz summary in-line report.
merged with 3 mins cache
Merge pull request #1948 from Stanford-Online/jbau-micro-profiling

Left navbar cache miss optimization fixes #1941